[IRDA]: irda_create() nuke user triggable printk

[ Upstream commit: 9e8d6f89 ]

easy to trigger as user with sfuzz.

irda_create() is quiet on unknown sock->type,
match this behaviour for SOCK_DGRAM unknown protocol

Signed-off-by: Maximilian Attems <max@stro.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Adrian Bunk <bunk@kernel.org>